CAJ | 학술논문

以聚乙烯吡咯烷酮(PVP)溶胶/钛酸正丁酯为前躯体,以静电纺丝法制备了PVP/Ti(OC_4H_9)_4纤维.550℃下,空气氛中焙烧双组分纤维,得到直径60～300 nm的TiO_2纳米纤维.继而以气相沉积法制得碳包覆TiO_2纳米纤维.用红外吸收光谱(FTIR)、X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等对纳米纤维进行了表征.与TiO_2纳米纤维、TiO_2纳米粉体相比,气相沉积法制备的碳包覆TiO_2纳米纤维在光分解亚甲基蓝上表现出更好的催化性能.
이취을희필각완동(PVP)용효/태산정정지위전구체,이정전방사법제비료PVP/Ti(OC_4H_9)_4섬유.550℃하,공기분중배소쌍조분섬유,득도직경60～300 nm적TiO_2납미섬유.계이이기상침적법제득탄포복TiO_2납미섬유.용홍외흡수광보(FTIR)、X사선연사(XRD)、소묘전자현미경(SEM)、투사전자현미경(TEM)등대납미섬유진행료표정.여TiO_2납미섬유、TiO_2납미분체상비,기상침적법제비적탄포복TiO_2납미섬유재광분해아갑기람상표현출경호적최화성능.
This work investigates the fabrication of the ultrafine fibers by polyvinylpyrrolidone (PVP) sol/titanium n-butyloxide (Ti(OC_4H_9)_4) using the electrospinning technique. The bicomponent fibers of PVP/Ti(OC_4H_9)_4 are heat treated at 200℃ and calcined at 550℃. TiO_2 nanofibers with a diameter of 60～300 nm were fabricated. Thin carbon films were deposited on the surface of the TiO_2 nanofibers by chemical vapor deposition (CVD). The morphological structure of the uhrafine fibers has been studied by means of infrared (FTIR) spectrum, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Comparing with TiO_2 nanofibers the carbon film deposited TiO_2 fibers exhibit higher photo-catalytic activity toward the degradation of methylene blue.